samba - Aug 2009 - Using Samba in a Linux-only environment - GDM login

Hi, I would like to use Samba in a Linux-only environment where users
would log in through GDM and have access to configured shares.  What
is the research vector I should take here?  If relevant, I'm using the
latest stable version of Ubuntu (9.04) on both the clients and the
server.

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/jm